With bikini season right around the corner, many of us find ourselves asking the same question: How do I lose weight quickly? I was in that same situation one morning while watching infomercials when I came across the 21 Day Fix.

Created by celeb trainer, Autumn Calabrese (who also trained Kendall Jenner!), the fix provides you with intense workout DVDs and a diet plan that promises incredible results in a matter of three weeks.

I know what you're thinking … so just a little exercising and eating healthy? How hard could it be? Well, let me tell you. Here are 7 things to keep in mind before you start your fix.

This is not a magic potion. Although it's marketed to get you "shredded" and give you "results like crazy," you still need to put in a decent amount of work. I found myself struggling on multiple occasions to even get through the 30 minute workouts.

The workouts do get easier. By week two, I was definitely dreading the workouts less — and felt stronger and more energized.

No, you don't get a day off. Instead, there are less intense workouts that you'll do to give your muscles a break. You also won't work out the same muscle group twice in a row, so doing it for 21 days straight is feasible, just make sure you block out the time in advance.

Say goodbye to carbs. Now let me be clear, you DO get to have some carbs, but for someone who loves bread and pasta, the amount you're allowed is very limited. So be prepared.

Speaking of prepared, make sure you have all the proper equipment prior to starting your fix. I didn't realize that nearly all of the workouts require weights, so for the first few days I did without. The workouts are definitely more effective with weights, so make sure to pick up a light set and a heavy set.

You might want to get the recipe book. After a few days, you're going to need a change in what you eat in order to not get bored. I recommend picking up Autumn's book full of 21 Day Fix recipes.

Expect the unexpected. Not everyone is going to be able to get washboard abs in a few short weeks. A lot of the success stories come from those who've done several sessions of the fix. If you want those results, you're likely going to need more than 21 days.

Overall, it's a good product, and will definitely get you healthier and fit, but it's probably best suited for a person who needs help with portion control and committing to a workout plan.